Answer: B) 585 Explanation: The smallest possible number of books = L.C.M of 5, 9 and 13.Therefore, L.C.M of 5,9 and 13 is = 5 x 9 x 13 = 585.

Answer: A) Relic Towers Explanation:

Answer: A) 256 kb to 640 kb Explanation: Size of the primary memory of a PC ranges between 256 KB to 640 KB.

Answer: D) 3/10 Explanation: One hour = 60 min 18/60 = 3/10

Answer: D) 215 degrees Explanation: The total angle traced by the hour hand is the angle traced in 7 hours and 10 minutes.We know that the angle traced by the hour hand in one hour is 30º and in one minute is 1/2º.Therefore, (30º x 7) + (10 x 1/2º) = 215º is the angle traced by the hour hand.

Answer: B) The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur. Explanation: The correct statement from the given options is The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.

Answer: D) Solicitor general of India Explanation: The Solicitor General of India is the second law officer of the country.   The Solicitor General of India is below the Attorney General for India, who is the Indian government's chief legal advisor, and its primary lawyer in the Supreme Court of India.   The Solicitor General of India is appointed for the period of 3 years. He assists the Attorney General and is himself assisted by several Additional Solicitors General of India.

Answer: C) June 21 Explanation: The World Hydrography Day (WHD) is observed every year on June 21 to publicise the work of hydrographers and to create awareness about hydrography which is an essential science before undertaking any activity on or under the sea. The 2017 theme is “Mapping our seas, oceans and waterways – more important than ever”.